1, Horn, diameter 280*168MM
2, Impedance:6, 8, 12, 16 ohm, can also be
customized according to customer requirements
3, power: 40W
4, Aloud, long transmission distance, clear sound quality
5, pressure: more than 130 dB, is a good choice 
the noise transfer vehicle, stores, markets, public broadcasting system
6, stable and reliable quality, price concessions